C1111233131211111211113313231333133313331323221211113313311211113313332331121   >>    C111123313121111121111331323133313331333132322121111331331121111331333233112   <<    C1111233131211111211113313231333133313331323221211113313311211113313332331123   >>      C1111233131211111211113313231333133313331323221211113313311211113313332331122   >>